X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Fpprint.lisp;h=5032ecb699b7033fa1e9870aec42534154fe0b64;hb=1f7bb609de31bba1a85817496ecbde52a07edf14;hp=bc3dc844f1e97546d1a3b249d99f7bc3bb0b75b4;hpb=c0ea1cc4a9f928184b7a7ee65c396b79f1b9ff45;p=sbcl.git

diff --git a/src/code/pprint.lisp b/src/code/pprint.lisp
index bc3dc84..5032ecb 100644
--- a/src/code/pprint.lisp
+++ b/src/code/pprint.lisp
@@ -364,21 +364,23 @@
 ;;;; tab support
 
 (defun compute-tab-size (tab section-start column)
-  (let ((origin (if (tab-sectionp tab) section-start 0))
-	(colnum (tab-colnum tab))
-	(colinc (tab-colinc tab)))
+  (let* ((origin (if (tab-sectionp tab) section-start 0))
+         (colnum (tab-colnum tab))
+         (colinc (tab-colinc tab))
+         (position (- column origin)))
     (cond ((tab-relativep tab)
 	   (unless (<= colinc 1)
-	     (let ((newposn (+ column colnum)))
+	     (let ((newposn (+ position colnum)))
 	       (let ((rem (rem newposn colinc)))
 		 (unless (zerop rem)
 		   (incf colnum (- colinc rem))))))
 	   colnum)
-	  ((<= column (+ colnum origin))
-	   (- (+ colnum origin) column))
-	  (t
+	  ((< position colnum)
+           (- colnum position))
+	  ((zerop colinc) 0)
+          (t
 	   (- colinc
-	      (rem (- column origin) colinc))))))
+	      (rem (- position colnum) colinc))))))
 
 (defun index-column (index stream)
   (let ((column (pretty-stream-buffer-start-column stream))
@@ -689,15 +691,15 @@
   #!+sb-doc
   "Specify the indentation to use in the current logical block if STREAM
    (which defaults to *STANDARD-OUTPUT*) is it is a pretty-printing stream
-   and do nothing if not. (See PPRINT-LOGICAL-BLOCK.)  N is the indention
+   and do nothing if not. (See PPRINT-LOGICAL-BLOCK.)  N is the indentation
    to use (in ems, the width of an ``m'') and RELATIVE-TO can be either:
      :BLOCK - Indent relative to the column the current logical block
 	started on.
      :CURRENT - Indent relative to the current column.
-   The new indention value does not take effect until the following line
+   The new indentation value does not take effect until the following line
    break."
   (declare (type (member :block :current) relative-to)
-	   (type integer n)
+	   (type real n)
 	   (type (or stream (member t nil)) stream)
 	   (values null))
   (let ((stream (case stream
@@ -705,7 +707,7 @@
 		  ((nil) *standard-output*)
 		  (t stream))))
     (when (print-pretty-on-stream-p stream)
-      (enqueue-indent stream relative-to n)))
+      (enqueue-indent stream relative-to (truncate n))))
   nil)
 
 (defun pprint-tab (kind colnum colinc &optional stream)